Alert archive / Ohio / Mesoscale Discussions in 2011

Mesoscale Discussion 884

May 23, 20115 states

The Storm Prediction Center issued this mesoscale discussion at May 23, 2011, 7:25 AM CDT for 5 states. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued
May 23, 2011, 7:25 AM CDT (12:25 UTC)
Expired
May 23, 2011, 8:30 AM CDT
In force
65 min
Issued by
the Storm Prediction Center
All 96 counties

Edgar County, IL, Vermilion County, IL, Adams County, IN, Allen County, IN, Blackford County, IN, Boone County, IN, Carroll County, IN, Cass County, IN, Clay County, IN, Clinton County, IN, DeKalb County, IN, Delaware County, IN, Fountain County, IN, Fulton County, IN, Grant County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Huntington County, IN, Jay County, IN, Johnson County, IN, Kosciusko County, IN, Madison County, IN, Marion County, IN, Miami County, IN, Montgomery County, IN, Morgan County, IN, Noble County, IN, Parke County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Steuben County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Vigo County, IN, Wabash County, IN, Warren County, IN, Wayne County, IN, Wells County, IN, Whitley County, IN, Lenawee County, MI, Monroe County, MI, Washtenaw County, MI, Wayne County, MI, Allen County, OH, Ashland County, OH, Ashtabula County, OH, Auglaize County, OH, Champaign County, OH, Clark County, OH, Crawford County, OH, Cuyahoga County, OH, Darke County, OH, Defiance County, OH, Delaware County, OH, Erie County, OH, Fulton County, OH, Geauga County, OH, Hancock County, OH, Hardin County, OH, Henry County, OH, Holmes County, OH, Huron County, OH, Knox County, OH, Lake County, OH, Logan County, OH, Lorain County, OH, Lucas County, OH, Marion County, OH, Medina County, OH, Mercer County, OH, Miami County, OH, Morrow County, OH, Ottawa County, OH, Paulding County, OH, Portage County, OH, Putnam County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Shelby County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Union County, OH, Van Wert County, OH, Wayne County, OH, Williams County, OH, Wood County, OH, Wyandot County, OH, Crawford County, PA, Erie County, PA

The radar

The Northern Indiana radar (KIWX), 124 km from the middle of the area, began a volume at 12:27 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 0.4 hours before the alert went out and 165 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z on 2011-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 170 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2011-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 183 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
170 J/kg
Mixed-layer CIN
-56 J/kg
Mixed-layer LCL
776 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
183 m²/s²
0-3 km storm-relative helicity
246 m²/s²
Significant tornado parameter
0.2
Supercell composite
0.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 22, 7:52 PM CDTMesoscale DiscussionSPCBond, Calhoun, Clinton, Greene, Jersey, Macoupin and 6 more53 min
May 22, 8:26 PM CDTTornado WatchSPCBond, Calhoun, Cass, Champaign, Christian, Clay and 35 more8 hr
May 22, 9:35 PM CDTMesoscale DiscussionSPCDeKalb, DuPage, Grundy, Iroquois, Kane, Kankakee and 6 more55 min
May 22, 10:24 PM CDTMesoscale DiscussionSPCClark, Clay, Coles, Crawford, Cumberland, Edgar and 9 more66 min
May 23, 10:55 AM CDTSevere Thunderstorm WatchSPCAlexander, Bond, Calhoun, Clinton, Edwards, Fayette and 27 more7 hr
May 23, 12:37 PM CDTMesoscale DiscussionSPCBond, Christian, Clark, Clay, Clinton, Coles and 34 more83 min
May 23, 12:54 PM CDTSevere Thunderstorm WatchSPCChampaign, Christian, Clark, Clay, Coles, Crawford and 13 more5 hr
May 23, 2:52 PM CDTMesoscale DiscussionSPCClark, Clay, Coles, Crawford, Cumberland, Edgar and 8 more53 min
May 23, 3:58 PM CDTMesoscale DiscussionSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 14 more92 min
May 23, 4:24 PM CDTMesoscale DiscussionSPCMassac96 min
May 22, 7:20 PM CDTMesoscale DiscussionSPCAdams, Allen, Benton, Blackford, Boone, Carroll and 33 more115 min
May 22, 9:59 PM CDTMesoscale DiscussionSPCAllen, Carroll, Cass, DeKalb, Elkhart, Fulton and 14 more61 min
May 23, 3:20 AM CDTMesoscale DiscussionSPCClark, Floyd, Harrison, Jefferson, Ohio, Scott and 1 more85 min
May 23, 11:35 AM CDTMesoscale DiscussionSPCAdams, Allen, Blackford, Cass, DeKalb, Elkhart and 13 more85 min
May 23, 1:15 PM CDTSevere Thunderstorm WatchSPCAdams, Allen, Blackford, Cass, DeKalb, Elkhart and 15 more8 hr
May 23, 3:28 PM CDTSevere Thunderstorm WatchSPCClark, Crawford, Dearborn, Dubois, Fayette, Floyd and 12 more6 hr
May 23, 5:20 PM CDTMesoscale DiscussionSPCClark, Crawford, Dearborn, Decatur, Fayette, Floyd and 15 more55 min
May 23, 5:40 PM CDTMesoscale DiscussionSPCAdams, Allen, Blackford, DeKalb, Grant, Howard and 8 more65 min
May 22, 7:09 PM CDTMesoscale DiscussionSPCAntrim, Crawford, Grand Traverse, Kalkaska, Lake, Missaukee and 3 more96 min
May 22, 7:42 PM CDTMesoscale DiscussionSPCDickinson, Iron63 min
May 23, 6:20 PM CDTMesoscale DiscussionSPCAthens, Belmont, Coshocton, Gallia, Guernsey, Harrison and 15 more85 min
May 23, 9:33 AM CDTMesoscale DiscussionSPCAdams, Armstrong, Bedford, Blair, Cambria, Cameron and 21 more87 min
May 23, 9:48 AM CDTSevere Thunderstorm WatchSPCAdams, Bedford, Blair, Centre, Columbia, Cumberland and 15 more9 hr
May 23, 1:33 PM CDTMesoscale DiscussionSPCAdams, Bedford, Blair, Cambria, Centre, Clearfield and 12 more87 min
May 23, 3:40 PM CDTMesoscale DiscussionSPCAdams, Berks, Bradford, Carbon, Chester, Columbia and 22 more95 min

Nearby

Mesoscale Discussions in Ohio, 2011Mesoscale Discussions in Indiana, 2011Mesoscale Discussions in Michigan, 2011Every mesoscale discussion in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.